Magazine-camera.



J. P. HANSEN.

MAGAZINE CAMERA.

APPLICATION FILED MAY 10. 1912.

1,210,164. Patented Dec. 26,1916;

2 S HEETSSHEET l.

9 I If I 2 14 m E'Znesses 9' fizveizor (a be Jens Pei-er Hansen ATTORNEYS i A H I. P. HANSEN.

MAGAZINE CAMERA.

APPUCATH)" FILED KY 10 912- I 1,210,164. Patented Dec. 26,1916.

2 SHEETS-SHEET 2.

Fly. .9.

INVENTOR Jens Percr H anacn,

ATTORNEYS UNITED [STATES JENS PETER HANSEN, or COPENHAGEN, DENMARK.

MAGAZINE-CAMERA.

v Specification of Letters Patent. Pate ted D 26 1916 Application filed May 10, 1912. Serial No. 696,434.

To all whom it may concern:

Be it known that I, J nNs PETER HANSEN,

' a subject of the King of Denmark, residing 111g exposure.

at No. 9 Aarhusgade, Copenhagen, Denmark, have invented certain new and useful Improvements in Magazine-Cameras, of which the following is a specification.

My invention treats of a photographic magazine camera with ground glass and plate-changing mechanism.

The characteristic feature of the invention is that it permits of a direct focusing on the ground glass even to a fraction of a second before the exposure, as the plates are placed under the top of the camera in such a manner, that the turning of a handle swings the plate down in a vertical direction to be swung farther in the opposite horizontal direction in the bottom of the camera afterthe exposure is completed.

Finally arrangements are made in the camera, which insure the closing of the shutter and the focusing hood previous to the changing of plates.

The invention is' shown in the accompanying drawings, where 1 Figure 1 is a longitudinal section through the camera with the ground glass in position for focusing and the focusing hood open. Fig. 2 shows in perspective the back of the camera, seen from behind. Fig. 3

shows some unexposed plates together with their carriers and the 'undermost pushed rearwardly immediately before swinging downward. Fig. 1 is a detail of the suspending arrangement for the carrier dur- Fig. 5 is a sectional view showing a method of effecting the connection between the shutter and changing mechanism in cameras provided with a bellows between the front board and the box.

Fig. 6 shows a modified arrangement for changing the plates downward. Fig. 7

shows a plate carrier seen from the plate side. Fig. 8 is a partial section of two car'- riers with their plates. Fig. 9 shows oneupper corner of the carrier asseen from the inside and from above. Fig. 10 is a vertical section of the lower portion of the camera showing a modification. Fig. 11 is a horizontal section of the same.

The camera consists of a box 1, having aplate having ground-glass frame and supports it.

blackened inside, of the usual pattern, with a hinged lid 2, which by suitable means closes tightly on to the box. Under the lid is the magazine, whose longitudinal sides are formed of the sides of the camera, while on the front side it is bounded by a plate 22 and at the rear by a screen 21, while the plates are kept down by a spring 2 fixed on the lid. Finally, the camera has a loose removable bottom 3 for taking out the exposed plates. The unexposed plates are placed in their carriers 9 (Fig. 3) in such" manner that, when stored in the magazine, the film-side is upward; the carriers consist of a protection plate With three grooves, in which the photographic plate is inserted. Each carrier is provided with a flange 12 on its upper face and a rim 13 on its lower face. The rim 13 incloses a light excluding.

strip 14 of suitable material, and the flange 12, which extends on three sides of the carrier, forms a holding device for the photographic plate. When the carriers are super.- imposed as shown in Fig. 3the rim 13 surrounds the flange 12. The rectangle thereby formed is somewhat longer than the plate in order topermit of its motion. By bringing the carriers over each other the frame upon the underside of the overlying carrier will 'form an opaque lid for the underlying hotographic plate," At the four corners o the carrier are fixedpins 15. The upper plate is closed by a blind carrier consisting of a strip underit. v

a groove and light excluding The ground glass 4 is fitted in a frame5.

(Fig. 1) to which is fastened a fork 10, placed upon the .inside of the camera, the back 11 of which fork goes behind the The two prongs of the fork10 slide in a couple a of grooves on the inside of the camera and can, by means which willbe explained later, move in a horizontal direction. The frame 5 .carries. an upper extension 6, whlch actuates an-arm 7 carried by an axle 8, where on is placed. the upper side of the focusinghood 37. This hood consists of four parts .100

The inner side of the'prongs of the fork 10 have two projecting ribs 16', engaging with a plate l7 which is provided with a notch 18 (Fig. 4), which is on the side opposite the point of the rib 16. Such a plate 17 is fixed on either side of the camera. Outside these two notches 18 there is a groove 19 (Fig. 1) in the upper edge of the frame.

The carriers with the unexposed plates rest at the back iii the two plates 17, which inclose the pins and in front they are or backward.

On the axle 23 there is placed another arm 27 which by a suitable transmission member 28 can act upon .the shutter. As previously mentioned the exposed plates fall down to the bottomof the camera, during exposure they are retained at their bottom edge by a couple of blade springs 32, fixed to the ground glass frame, and furnished with hooks 32 moreover the lowest edge of theground-glass-frame isicut olf slantingly so that it can lie against a slanting wall 29. On the sides of the camera two slanting rectangular projections 30 are placed before this wall, in such a manner that two recesses 31 are formed between the walls 29 and the projections 30. In front the exposed plates are held by a couple of spring plates 33, fixed in the side of the camera, which are furnished with spring teeth 34, which engage the carriers and hold them firmly. Behind the teeth is pivoted a screen plate 35, whichis held forward by a spring 36. This plate assists in preventing the rays of light during later exposures or focusings from striking the plates which have been already exposed.

For focusin the ground-glass it must by a turn of the finger wheel 24 be carried forward into the position shown in Fig. 1", and thereupon the shutter and the focusing-hood 37 are opened. After focusing, the finger wheel is turned in the direction of the arrow a, whereby the ground-glass frame is brought back and presses upon the arm 7, which jams thefocusing-hood 37 and keeps it closed, so that light cannot penetrate. At the same time the arm 27 is moved forward and actuates the shutter, which thereby closes immediately. Through the continued movement of the arm 25, the points 38 of the ribs 16 grip behind the pins 15 on the lower Through the back movement of the lower carrier, the'front end will be released from the molding 20, and the carrier will then swing down in a vertical position around the back pin 15, and now the plate is in position for exposure, lying immediately in front of the ground-glass, which it covers quite opaquely, as it will be remembered that the lowest pins are held fast by the hook spring 32*. The return movement of the carrier is so nicely adjusted, that the film side of the plate comes exactly on the spot, where the mat-side of the ground-glass has been during focusing. When the lowercarrier has been brought into the place of the groundglass, the lowest carrier but one will occupy a slanting position, as the front end of the said carrier will rest directly upon the moulding 20, while the two pins in the'rear part will rest upon the ribs 16. When the prongs of the fork 10 are moved back to the focusing position, the ends 38 of the ribs 16 will slide past the pins 15, and the carrier then falls down into the former position of the lowestcarrier. After exposure'the changing downward .of the plate to the bottom of the camera is accomplished simply by turning back the finger wheel 24. The ground-glass .is thereby brought forward into the focusing position, driving the carrier with the exposed plate before it until the spring 32 has arrived outside the recesses 31, (Fig. 1). At that moment the upper pin of the carrier becomes clear of the plate 17 and the carrier then glides verticallyi downward, and then the lower part of. the carrier is turned back somewhat at the slope of the recess 31. By this means the upper end of the carrier swings forward and falls with the film side downward to the bottom of the camera, where it is held immovable by the teeth 34 and the recess 31.

The lens-board 39 can be displaced in a vertical direction in a frame,'in which there are a couple of incisions, in which the board can travel. Above, the board can be pushed up into acouple of notches 40, and the board can have an-extension of opaque material 41 laid in bellows-folds, which will preserve the opacity. Underneath, the board 39 can have a cross molding 42, which is inclosed by a shortcrossboard 43, having another cross molding 44. Of course the opaque material can be placed underneath and the crossboard above, or boards or opaque material both above and below.

To'insure the shutter being always closed during the changing there is placed in one side of the camera a bracket 45, carrying a spring 46, which under normal conditions keeps the transmission member 28 in the position shown in Fig. 1. By turning the axle 23 the arm 27 pushes the said member 28 to the left, overcoming the'resistance of the spring 46. The motion of the member 28 is guided b apivot a: in a slot 28' in the member. he opposite end of the member 28 presses, when 1t is in its displaced position, against a vertically hinged plate, which releases the shutter, so that it is closed, and as stated, this movement takes place prior 'to the plate falling'down into the position of exposure in such a manner, that there is an absolute guaranty that the shutter is closed before the plate can be exposed. If after the focusing it is not desired to expose, one can close the shutter with a slight mbvement of the arm 27, which thereby releases I the shutter, whereupon the arm is turned back again, before it has been moved sufficiently to bring a plate into the position for exposure.

In Fig.- 6 is shown a modified application of the carriers whereby the advantage is ob-' tained, that they do not require to be displaced in proportion to one another, so that they can be built shorter, which gives as result, that the depth and height of the camera will be smaller. In this figure the carriers for the most part donot rest upon a glides in over the front pins of the lowest carrier, which rests upon the plate 57, and the said projection, which is likewise fixed upon the prongs of the fork 10 is released, simultaneously with the front end of the carrier, which thereby swings down in the manner formerly described. The next lowest carrier rests during the exposure upon the plate 58, and when the prongs of the fork 10 are carried forward to'the focusing position, this carrier falls down upon the plate 57. Instead of the described upstanding flanges 12 and rims 13 on the carriers, turned down ed s 59 may be used, of which the one grips t e other, as appears in the modification shown in Fig. 6.

The carriers asshown in Fig. 3 may be formed as shown in=Figs. 7 and 8, b which a better light-excluding effect is 'o tained. The ed es of the protecting plates arebent down, gorming rectan lar broad rims 13 whereby the light wil have several edges 7 to pass before itcan arrive to. the photographic plate making it fully: impossible for the plates being exposed to the light. Also in this embodiment there may be arranged light "excluding strips 14 in, the rims. It

may be easily seen that the shape of the flanges makes it ossible for the plates to move a little in re ation to each other without this augmenting the possibility for the light to injure the photographic p ates.

In order that it; may be possible to load the camera in the day-light the flanges 12 and rims 13 may extend on all the four sides of the protecting plate. Of course, the photographic plates must be inserted in the carriers in a dark room, where the carriers are placed on each other, the bottom and top plates being blind carriers and a strap or the likeis placed around them for holding them together. After the plates have been inserted in the camera the strap is taken away and the lid closed.

When all the plates have been exposed, the camera is placed in-the edge of a table or the like, the bottom of the camera is taken away and the camera is lifted up, the plates being thereby free. The strap is then again placed around the plates.

When the carriers are provided on all the four sides with flanges, it is impossible to ,push in the photographiqplates from the side. In such a case the said plates must be placed in the carriers from above. This can be performed by making a greater distance than the length or breadth of the photographic plates between'two opposite flanges, of thecarrier 9 and arranging a spring 9 under one flange as shown in Fig. 7. Under this flange the one edge of the photographic plate is inserted and by pressing againstthe spring the other edge of the plate can be placed under the other flange.

Of course, the flangeand rims of the carriers can be formed in different manners, without changing the principle in the carriers, namely that each one forms a lid for another, the light-exclusion being obtained through projections or frames of suitable forms on-the upper as well as on the underside of the carriers.

If thev camera'is intended to be arranged upon a tripod head it will be unsuitable to so arrange it that the plates are taken out through the bottom thereof, as described above. In such a case the plates are taken out through the back of the camera.

Figs. 10 and 11 show a casing 60., .arranged at the bottom of the camera and intended to be. taken out through the back thereof. For this purpose the underside of the ground glass frame 5 terminates short of the bottom of the camera for permitting the casing to be taken out, .and the back wall of the camera with the screen is hinged to the camera as a door. j

In order to make it possible to grasp with the one hand all the plates the bottom of the casing is provided with a cut-out portion 61 in the middle.

When the casing 60 is used, the parts 2936 must be modified. The slanting wall 29 (Fig. 1) is omitted and for it is substituted an oblique wooden strip 29 fixed to the back of the casing. The slanting rails 30 are arranged on the side walls of the casing. The spring plates 33 with the teeth 34 are arranged parallel with the rails 30 on an oblique Wooden strip, extending crosswise through the camera.

If desired the plates 17 can be omitted and instead thereof the plate 21 may be provided with the projections 62, as shown in Fig. 9. The spring hooks 32 can be arranged on the side walls. The slanting rib 16 can also be omitted, as the projections 62 will bear the one end of all the carriers. For said ribs 16 a pin 62 may be substituted placed in the fork 10 in the place of the point 38. p

It will be apparent, that all details in such a complicated mechanism can be varied in many ways, without such variations constituting a departure from the principles of the invention. In the present specification some modifications as regards the carrying out of some details have been described, but

stress should be laid upon the fact, that several other parts can bev arranged in another manner. Especially it is to be observed that the ground-glass frame may be fixed and that instead thereof the lens of the lens board may be movable quite in the same way as is described above with respect to the groundglass frame.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declarethat what I claim is:

1. In a photographic magazine camera, a shutter, a plate carrier, a focusing hood, a movable ground glass frame, and means whereby the shutter, carrier and hood may be operated from the ground glass frame to 7 close the shutter and hood and to swing the carrier in front of the lens frame and after exposure to swing the said carrier in reverse position on the bottom of the camera.

2. In a photographic magazine camera, a movable ground glass frame, plate carriers, and means for operating-the carriers from the ground glass frame, each carrier comprising rectangular frames on both sides,

said upstanding frames inclos'ing light exeluding strips, the sides of the frames being longer in one direction than the c orresponding sides of the plate, whereby the underlying plate will be surrounded by the frame on the underside of the overlying plate, thereby permitting the underlying plate to. be displaced Without exposure to light.

3. In a photographic magazine camera, a box having grooves on its inner face, a movable ground glass frame having a notch, a-

plate carrier having at its sides projecting ing in the notch of the frame, a fork secured to the frame, means for operating the frame,

said fork having prongs at the ends of its members adapted to engage the pins of the carrier and to move them into the said groove, a guideway at the bottom of the box in front of the ground glass frame, and

spring hooks on the said frame for engaging the'pins of the carrier and guiding the pins into the said'guideway.

5. In a magazine camera a box having grooves in its inner surface, a movable ground glass frame having a notch, a plate carrier having pins at its sides projecting into the notch ofthe said frame, means. for supporting the front end of the carrier, a member secured to the frame and having prongs adapted to engage the pins of the carrier and move them into the groove, and a rock shaft having an arm engaging the said member to operate it and thereby the frame.

6. In a magazine camera, a box having grooves in its inner face, a movable ground glass frame having a notch, a plate carrier having pins engaging the notch of the frame, means for supporting the front end of the carrier, a member secured tothe frame and having prongs for moving the pins from the notch of the frame into the grooves of the box, means for operating the frame, a guideway at the rear of the bottom of the box for guiding the plate carrier, and a spring clamping device at the front of the box for holding a plate.

7. In a magazine camera, a box having grooves on. its inner face, a movable ground glass frame having a notch, a plate carrier having pins projecting into the notch of the frame, means for supporting the front ends of the carrier, a member secured to the frame and having means engaging the pins to move them from the notch of the frame into the grooves of the box, means for operating the frame, a guideway at the rear of the bottom of the box for guiding the plate carrier, said guideway being partly formed by the said frame, a hook-shaped spring above'the guideway, and a spring clamping formed with an opening opposite the focusing plate, and a hood fornormally closing said opening, said hood including a collapsL ble shield and a rotating shaft connected.

with the shield for opening and closing the same.

In testimony whereof I afiix my signature in presence of two witnesses.

JENS PETE Witnesses:

CHARLES HUDE, TISTRAM WoLsmG,

R HANSEN. 

